Walter j



SAFETY DEVICE FOR GAS RANGES. APPLICATION FILED NOV-12 1920.

I 1,376,909. 7 Patented May 3, 1921.

IN VEN TOR.

WALTER a. WOIDRASKA,

PATEN T OFFICE.

OF NEW YORK, N. Y.

SAFETY DEvIcE FOR GAS-RANGES.

Specification of Letters Patent. 7 i

I Patented May 3, 1921.

Application filed November 12, 1920. Serial No. 423,651.

To all whom it may concern:

Be it known that I, WALTER J. lVoDEAsKA, a citizen of the United States,residing at New York, in the county of Bronx and State of New York, haveinvented certain new and useful Improvements in a Safety Device forGas-Ranges, of which the following is a specification.

This invention relates to safety valves for gas burners and moreparticularly to an attachment to be mounted on the burner of a gas stoveor ran e, whereby the gas may be shut off after t e same has beenextinguished.

It is well known in the culinary art, that the contents of a receptacle,while cooking on a gas range will overflow and boil over, thus causingthe gas flame to be extlnguished while the gas continues to flow. Thisinvention contemplates the provision of means for causing the gas to beimmediately shut off so that the danger of asphyxiation will beeliminated.

Other objects of the invention will appear upon consideration of thefollowing detail description and accompanying drawings, wherein Figure 1is a side elevation, partly in section, showing the invention applied toan ordinary as burner,

.Fig. 2 1s a transverse section taken approximately on the line 2-2 ofFig. 1, showing the valve in closed position,

Fig. 3 is a perspective view of the safety valve detached.

Referring to the drawing by numerals, the burner 1 is of the typegenerally used on gas ranges and is connected by a pipe 2 to the airchamber 3. The gas jet 4 extends into the air chamber 3 from the gascook 5 which is opened and closed by the manipulation of the handle 6.The handle 6 has its hood portion 7 mounted on the valve shaft 8 in theusual manner but is normally freely rotatable on the shaft. The shaft,however, is provided with a notch 8 whlch is adapted to be engaged byone end of a push button 9 normally held out of engagement by a spring10 so that the shaft 8 can not be turned until the push button 9 1spressed inwardly. This structure prevents children from turning the gason by merely turning the handle 6 and will also prevent accidental orcasual turning of the gas cook by persons working around the gas range.

Disposed beneath the gas burner 1 1s a tray or shallow pan 11 which ismounted on a pivoted arm 12, the pivot 13 being carried by a supportingmember 14 fixed in any suitable way to the burner. A weight 15,adjustably mounted on the arm 12 may be arranged to balance the pan 11properly beneath the burner l, and the arm 12 is provided with anupstanding finger 16 which is in a position to engage one end of a triplever 17 pivotally mounted as indicated at 18. This lever is in aposition to engage a trip rod 19 formed by the right angularly turnedend of a shaft 20 which extends transversely through the air chamber 3and which carries a valve plate 21 adapted to swing into and out ofengagement with the end of the gas jet 4 whereby the gas opening thereinmay be opened and closed. A spring 22 is mounted in position to normallymaintain the valve plate 21 in closed position so that when the triplever 17 is engaged with the rod 19 there will be a tension on the valveplate 21 by virtue of the spring 22.

lVhen a cooking vessel is upon the gas plate or burner I, and thecontents of the receptacle boils over, the pan 11 will catch a portionof the liquid causing it to be swung on the pivot 13 whereupon thefinger 16 will-cause the trip lever 17 to be disengaged from the rod 19thus releasing the latter and permitting the spring to force the valveplate 21 into closed position over the opening in the gas jet whereuponthe gas will be'immediately out 01f and will not begin to flow againuntil the apparatus has been reset.

Minor changes may be made in the details of construction withoutdeparting from the'spirit of the invention or the scope of the claimshereunto appended.

What I claim is 1. In combination with a gas burner having an exposedgas jet, of ashallow pan pivotally mounted beneath the burner, a closurevalve normally open and adapted to engage theend of the said gas jet toclose the same, and means connected to the piv-- otally mounted pan andto the said valve member whereby the valve member may be closed over theend of-the gas jet when the pan is depressed beneath the burner.

2. In combination with a gas burner having an air chamber, and a gas jetleading into the air chamber, a valve mounted in the air'chamber andadapted to close the gas et, means to maintain the valve in normallyopen position, a pan pivotally mounted beneath the burner and adapted toswing downwardly, and means connected to the said pan and to the saidvalve operating means whereby the valve may be operated when the pan isdepressed.

3. In combination with a gas burner, an air chamber and a gas jetleading into the air chamber, of a pan pivotally mounted beneath the gasburner, a spring pressed valve mounted in the air chamber and adapted toclose the gas jet but normally disposed in open position, a trip fingerengageable with the said valve to normally maintain it in open position,and means connected with the said pan and adapted for engagement withthe trip finger to release the latter whereby the spring pressed valvemay be turned into a position to close the said gas jet.

In testimony whereof, I have aflixed my signature in the presence of twowitnesses.

lVALTER J. VODRASKA. Witnesses VINCENT ovAK, FREDERICK LANDI.

